Transformation behavior and inverse caloric effects in magnetic shape memory Ni44-xCuxCo6Mn39Sn11 ribbons

Wójcik, Anna; Maziarz, W.; Szczerba, M.J.; Sikora, Marcin; Żywczak, Antoni; Aguilar-Ortiz, C.O.; Álvarez-Alonso, Pablo; Villa, Elena; Flores‐Zúñiga, H.; Cesari, E.; Chernenko, V.A.

doi:10.1016/j.jallcom.2017.05.337

Cited by 27 publications

(10 citation statements)

References 49 publications

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“…We have found that Cu addition instead of Ni causes an increase of the lattice parameter a c of austenite and consequently the unit cell volume. Thus, independently of the fabrication method, alloys with the same chemical composition show alike behavior . Moreover, small amount of Cu (1 and 2 at.%) slightly decreases thermal hysteresis, which is very important from practical point of view.…”

Section: Resultsmentioning

confidence: 99%

Magneto‐Structural Properties of Multielement Ni–Cu–Co–Mn–Sn Heusler Bulk Alloys

Wójcik

Maziarz

Szczerba

et al. 2018

Physica Status Solidi (a)

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The effect of Cu substitution for Ni on the structural and magnetocaloric properties in Ni 44Àx Cu x Co 6 Mn 39 Sn 11 (x ¼ 0-4 at.%) bulk Heusler alloys is studied. It is reported that Cu addition stabilizes austenite phase. Generally, martensitic transformation temperature decreases with an increase of Cu concentration up to 4 at.%. The addition of 1 and 2 at.% of Cu allows to shift the temperature of martensitic transformation close to room temperature, while the strong inverse magnetocaloric effect is observed in alloys containing 0-3 at.% of Cu. The value of magnetic entropy at low magnetic field of 15 kOe evolves from 6.3 J kg À1 K À1 for Cu0 to 9.7 J kg À1 K À1 for Cu1, 7.1 J kg À1 K À1 for Cu2, 8.6 J kg À1 K À1 for Cu3, and 4.1 J kg À1 K À1 for Cu4 alloys. The estimated value of the effective refrigerant capacity, including hysteresis loss, is equal to 74.1, 80.4, 106.5, 42.6, and 77.6 J kg À1 for Cu0, Cu1, Cu2, Cu3, and Cu4, respectively.

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Section: Resultsmentioning

confidence: 99%

Magneto‐Structural Properties of Multielement Ni–Cu–Co–Mn–Sn Heusler Bulk Alloys

Wójcik

Maziarz

Szczerba

et al. 2018

Physica Status Solidi (a)

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“…It is seen that there is an increase in the parameter a with increasing the Cu content, which indicates an expansion in the unit cell. If we consider that Cu 2+ atoms occupy exactly Ni 2+ sites, we believe that this expansion in the unit cell is caused by larger ionic radius of Cu 2 + (0.128 nm) than that of Ni 2 + (0.125 nm) [29].…”

Section: Resultsmentioning

confidence: 99%

Influence of the Cu substitution on magnetic properties of Ni–Mn–Sn–B shape memory ribbons

Кират

Aksan

2021

Appl. Phys. A

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The Heusler alloy Ni50-xCuxMn38Sn12 + By (x = 0, 1, 3 and 5) was successfully produced in ribbon form using melt spinning technique. The magnetic properties of the obtained ribbons were analyzed in detail. In all ribbons, it was detected that the ferromagnetic austenite phase transformed into the weak magnetic martensite phase. A separation between FC and ZFC curves at lower temperatures was found. An increase in the magnetization in FC mode can be attributed to the coexistence of ferromagnetic (FM)/antiferromagnetic (AFM) at martensitic phase. It was found that the transition temperatures shifted to low temperatures with increasing the Cu content. The magnetization results under high magnetic field (10 kOe and 50 kOe) showed a thermal hysteresis between the cooling and heating cycles, which is clear evidence for a first-order transformation in the ribbons. From M–H data, all the ribbons exhibited ferromagnetic behavior at low temperatures below the martensitic transition temperature and paramagnetic behavior at high temperatures above the transition temperature. The results provide us a comprehensive view to reveal the effect of the Cu substitution on the magnetic properties of Ni–Mn-based shape memory ribbons.

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“…Compared with the result of M–T curves, the characteristic temperatures from DSC show some differences, which would probably attribute to the different sample sizes and heating and cooling rates . In addition, a thermal hysteresis can also be confirmed by the difference between M s and A f, implying a first‐order phase transition . The ΔS can be estimated by the relationship Δ S = Δ H / T 0 , where T 0 is the equilibrium temperature defined as ( M s + A f )/ 2 , and the ΔH is calculated as the areas of exothermic or endothermic peaks.…”

Section: Resultsmentioning

confidence: 99%

Magnetocaloric and Elastocaloric Effects in All‐d‐Metal Ni₃₇Co₉Fe₄Mn₃₅Ti₁₅ Magnetic Shape Memory Alloy

Liu

Xuan

Cao

et al. 2019

Physica Status Solidi (a)

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The magnetocaloric effect and the elastocaloric effect in a polycrystalline all‐d‐metal Ni37Co9Fe4Mn35Ti15 magnetic shape memory alloy are investigated. The alloy undergoes a transition from ferromagnetic austenite to weak‐magnetic martensite near room temperature. It exhibits a maximum magnetic entropy change of 8.4 J Kg−1 K−1 under the magnetic field of 3 T. Moreover, a maximum temperature change of 6.3 K associated martensite transition is obtained at room temperature by loading the uniaxial stress of 400 MPa. These results suggest that the alloy is the promising candidate for new solid‐state refrigeration materials.

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Transformation behavior and inverse caloric effects in magnetic shape memory Ni44-xCuxCo6Mn39Sn11 ribbons

Cited by 27 publications

References 49 publications

Magneto‐Structural Properties of Multielement Ni–Cu–Co–Mn–Sn Heusler Bulk Alloys

Magneto‐Structural Properties of Multielement Ni–Cu–Co–Mn–Sn Heusler Bulk Alloys

Influence of the Cu substitution on magnetic properties of Ni–Mn–Sn–B shape memory ribbons

Magnetocaloric and Elastocaloric Effects in All‐d‐Metal Ni₃₇Co₉Fe₄Mn₃₅Ti₁₅ Magnetic Shape Memory Alloy

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Transformation behavior and inverse caloric effects in magnetic shape memory Ni44-xCuxCo6Mn39Sn11 ribbons

Cited by 27 publications

References 49 publications

Magneto‐Structural Properties of Multielement Ni–Cu–Co–Mn–Sn Heusler Bulk Alloys

Magneto‐Structural Properties of Multielement Ni–Cu–Co–Mn–Sn Heusler Bulk Alloys

Influence of the Cu substitution on magnetic properties of Ni–Mn–Sn–B shape memory ribbons

Magnetocaloric and Elastocaloric Effects in All‐d‐Metal Ni37Co9Fe4Mn35Ti15 Magnetic Shape Memory Alloy

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Magnetocaloric and Elastocaloric Effects in All‐d‐Metal Ni₃₇Co₉Fe₄Mn₃₅Ti₁₅ Magnetic Shape Memory Alloy